How severe is CVE-2026-39845?

CVE-2026-39845 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-39845 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-39845?

CVE-2026-39845 affects Weblate. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-39845?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-39845 have an EU (EUVD) identifier?

Yes. CVE-2026-39845 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23018.

When was CVE-2026-39845 published?

CVE-2026-39845 was published on 2026-04-15 and last updated on 2026-06-17.

CVE-2026-39845

CVE-2026-39845 is a medium-severity vulnerability in Weblate with a CVSS 3.x base score of 4.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 4.1)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23018
Weakness: CWE-918
Affected product: Weblate
Published: 2026-04-15
Last modified: 2026-06-17

Description

Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable the webhook add-on as a workaround.

Frequently asked questions

What is CVE-2026-39845?: Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable the webhook add-on as a workaround.
How severe is CVE-2026-39845?: CVE-2026-39845 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-39845 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-39845?: CVE-2026-39845 affects Weblate. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-39845?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-39845 have an EU (EUVD) identifier?: Yes. CVE-2026-39845 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23018.
When was CVE-2026-39845 published?: CVE-2026-39845 was published on 2026-04-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:weblate:weblate:*:*:*:*:*:*:*:*

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